期刊
CELL REPORTS
卷 36, 期 9, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.celrep.2021.109623
关键词
-
类别
资金
- NIH [2P20GM103636, 1R35GM138364]
The study in Caenorhabditis elegans reveals the role and regulation of heat shock transcription factor HSF-1 in germline development, showing that heat stress only induces the canonical heat shock response in a subset of germ cells, while insulin/IGF-1 signaling activates HSF-1 in germ cells through signaling pathways in somatic cells. This non-cell-autonomous mechanism links nutrient-sensing insulin/IGF-1 signaling to HSF-1 activation to support homeostasis in rapid germline growth.
Germline development is sensitive to nutrient availability and environmental perturbation. Heat shock transcription factor 1 (HSF1), a key transcription factor driving the cellular heat shock response (HSR), is also involved in gametogenesis. The precise function of HSF1 (HSF-1 in C. elegans) and its regulation in germline development are poorly understood. Using the auxin-inducible degron system in C. elegans, we uncovered a role of HSF-1 in progenitor cell proliferation and early meiosis and identified a compact but important transcriptional program of HSF-1 in germline development. Interestingly, heat stress only induces the canonical HSR in a subset of germ cells but impairs HSF-1 binding at its developmental targets. Conversely, insulin/ insulin growth factor 1 (IGF-1) signaling dictates the requirement for HSF-1 in germline development and functions through repressing FOXO/DAF-16 in the soma to activate HSF-1 in germ cells. We propose that this non-cell-autonomous mechanism couples nutrient-sensing insulin/IGF-1 signaling to HSF-1 activation to support homeostasis in rapid germline growth.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据